Commit c52b9cb1 authored by Elizabeth Figura's avatar Elizabeth Figura Committed by Greg Kroah-Hartman
Browse files

selftests: ntsync: Add some tests for wakeup signaling via alerts. 



Expand the alert tests to cover alerting a thread mid-wait, to test that the
relevant scheduling logic works correctly.

Signed-off-by: default avatarElizabeth Figura <zfigura@codeweavers.com>
Link: https://lore.kernel.org/r/20241213193511.457338-27-zfigura@codeweavers.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent dd914e0d

tools/testing/selftests/drivers/ntsync/ntsync.c

+62 −0
Original line number Diff line number Diff line
@@ -1063,9 +1063,12 @@ TEST(wake_all) 
TEST(alert_any)

{

	struct ntsync_event_args event_args = {0};

	struct ntsync_wait_args wait_args = {0};

	struct ntsync_sem_args sem_args = {0};

	__u32 index, count, signaled;

	struct wait_args thread_args;

	int objs[2], event, fd, ret;

	pthread_t thread;



	fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);

	ASSERT_LE(0, fd);
@@ -1107,6 +1110,34 @@ TEST(alert_any) 
	EXPECT_EQ(0, ret);

	EXPECT_EQ(2, index);



	/* test wakeup via alert */



	ret = ioctl(event, NTSYNC_IOC_EVENT_RESET, &signaled);

	EXPECT_EQ(0, ret);



	wait_args.timeout = get_abs_timeout(1000);

	wait_args.objs = (uintptr_t)objs;

	wait_args.count = 2;

	wait_args.owner = 123;

	wait_args.index = 0xdeadbeef;

	wait_args.alert = event;

	thread_args.fd = fd;

	thread_args.args = &wait_args;

	thread_args.request = NTSYNC_IOC_WAIT_ANY;

	ret = pthread_create(&thread, NULL, wait_thread, &thread_args);

	EXPECT_EQ(0, ret);



	ret = wait_for_thread(thread, 100);

	EXPECT_EQ(ETIMEDOUT, ret);



	ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);

	EXPECT_EQ(0, ret);



	ret = wait_for_thread(thread, 100);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(0, thread_args.ret);

	EXPECT_EQ(2, wait_args.index);



	close(event);



	/* test with an auto-reset event */
@@ -1143,9 +1174,12 @@ TEST(alert_any) 
TEST(alert_all)

{

	struct ntsync_event_args event_args = {0};

	struct ntsync_wait_args wait_args = {0};

	struct ntsync_sem_args sem_args = {0};

	struct wait_args thread_args;

	__u32 index, count, signaled;

	int objs[2], event, fd, ret;

	pthread_t thread;



	fd = open("/dev/ntsync", O_CLOEXEC | O_RDONLY);

	ASSERT_LE(0, fd);
@@ -1173,6 +1207,34 @@ TEST(alert_all) 
	EXPECT_EQ(0, ret);

	EXPECT_EQ(2, index);



	/* test wakeup via alert */



	ret = ioctl(event, NTSYNC_IOC_EVENT_RESET, &signaled);

	EXPECT_EQ(0, ret);



	wait_args.timeout = get_abs_timeout(1000);

	wait_args.objs = (uintptr_t)objs;

	wait_args.count = 2;

	wait_args.owner = 123;

	wait_args.index = 0xdeadbeef;

	wait_args.alert = event;

	thread_args.fd = fd;

	thread_args.args = &wait_args;

	thread_args.request = NTSYNC_IOC_WAIT_ALL;

	ret = pthread_create(&thread, NULL, wait_thread, &thread_args);

	EXPECT_EQ(0, ret);



	ret = wait_for_thread(thread, 100);

	EXPECT_EQ(ETIMEDOUT, ret);



	ret = ioctl(event, NTSYNC_IOC_EVENT_SET, &signaled);

	EXPECT_EQ(0, ret);



	ret = wait_for_thread(thread, 100);

	EXPECT_EQ(0, ret);

	EXPECT_EQ(0, thread_args.ret);

	EXPECT_EQ(2, wait_args.index);



	close(event);



	/* test with an auto-reset event */